/** * Validates this instance. */
 public void validate() {
   for (int permissionIndex = 0; permissionIndex < this.getItems().size(); permissionIndex++) {
     FolderPermission permission = this.getItems().get(permissionIndex);
     try {
       permission.validate(this.isCalendarFolder, permissionIndex);
     } catch (ServiceValidationException e) {
       e.printStackTrace();
     } catch (ServiceLocalException e) {
       e.printStackTrace();
     }
   }
 }